BUS INTERFACE DEVICE FOR OPTICAL MODULE MATCHING AND METHOD THEREOF

摘要

PURPOSE: A bus interface device for an optical module matching and a method thereof are provided to overcome a delay time which may be generated caused by a conversion between a digital signal and an optical signal of an optical module interface by delaying a driving of a signal permitting a use of data in the case that data are written for an optical module interface through the optical module interface on a bus. CONSTITUTION: A graphic data transmitting/receiving card(200) being connected to a peripheral component interconnect(PCI) is mounted on a PCI slot of a PC. The graphic data transmitting/receiving card(200) has a function for exchanging data between a CPU of the PC and a monitor unit(250) transmitting/receiving graphic data through an optical cable(240). The elements of the card(200) are described as follows. A bridge unit(210) processes an interface for connecting a PCI bus which is a system bus of the PC to the monitor unit(250). A card control unit(220) controls a data transmission between the bridge unit(210) and an optical signal conversion card module(230). The optical signal conversion card module(230) converts a digital signal transmitted from the card control unit(220) into an optical signal and outputs the optical signal to the monitor unit(250). Also, the optical signal conversion card module(230) converts the optical signal transmitted from the monitor unit(250) into a digital signal and outputs the digital signal to the card control unit(220). The elements of the monitor unit(250) are described as follows. An optical signal conversion monitor module(260) converts the optical signal transmitted from the optical signal conversion card module(230) into a digital signal and outputs the digital signal to a monitor control unit(270). Also, the optical signal conversion monitor module(260) converts the digital signal transmitted from the monitor control unit(270) into an optical signal and outputs the optical signal to the card(200). The monitor control unit(270) controls a data transmission between the monitor module(260) and a VGA control unit(280). The VGA control unit(280) displays data transmitted from the monitor control unit(270) on a screen.